Not my area really but this caught my eye because I remember reading about big cat sightings in rural Wales a few years back and the descriptions were almost identical - massive black cat, way too big to be a domestic, moving low to the ground like it knew exactly what it was doing.
The thing I always wonder with these reports is whether its escaped exotic pets or something genuinely unknown. Kentucky's got a lot of wilderness so either seems plausible to me.
Did you actually see it yourself or is this second hand? And roughly how big are we talking - like labrador sized or more like a panther? Would love to know if anyone else in that area has reported it to wildlife authorities and what response they got.